Lock mechanism.



N0. 806,775. PATENTED DEC. l2, 1905.

C.. J. CALBY.

LOCK MECHANISM.

APPLICATION FILED 00T. 19.1904.

. able construction.

UNITED STATES PATENT OFFICE.

CHARLES J. CALEY, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO RUSSELL & ERWIN MANUFACTURING COMPANY, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LOCK IVIECHANISNI.

Specicaton of Letters Patent.

Patented Dec. 12, 1905.

Applicaticnled October 19, 1904:. Serial No. 229,077.

.To all whom, t may concern:

' Beitknown that I, CHARLES J. CALEY, acitizen of the United States, residing at New Britain, in the county of Hartford, State of Connecticut, have invented certain new and useful Improvements in Lock Mechanism, of

which the following is a full, clear, and exact description.

My invention relates to improvements in lock mechanism, and particularly for use in communicating doors for hotels and other places where suites of rooms are sometimes thrown together and sometimes to be used separately.

The object of the invention is to provide a simple and economical construction which may be operated to lock the door from either side when occasion may require, so that it may not be opened from the other side, and

also to provide key-controlled means for holding the parts of the lock in the locked or unlocked position to prevent operation from either side by means of the usual thumbpieces.

The accompanying single sheet of drawings illustrates the principles of my invention.

It consists of the employment of a pair of bolts, one of which is operable from one side of the door and the other operable from the other side. A dead -bolt is also provided which is key-controlled and operablel from either side of the door to prevent the operation of either locking-bolt.

Figure 1 is a side elevation of a lock embodying the improvements of my invention, part of one side of the casing being broken away to show the interior construction. Fig. 2 is a rear elevation and partial section showing the parts of the lock which involve my invention, together with thumb-pieces for operating the locking-bolts. Fig. 3 is a fragmentary view similar to Fig. l, but with one of the locking-bolts extended and the tumblers for the dead-bolt removed.

The casing of the lock may be of any suit- In the form shown it has two side plates 1 and 2 and a face-plate 3. Suitable provision may be made for the ordinary latch and knob operating mechanism therefor, as is customary. My invention resides wholly, however, in the positive locking mechanism,

4 represents one of the locking-bolts which is adapted to be thrown through an opening in the face-plate. The tail of the bolt is guided between lugs 5 and 6, the latter also acting as a stop to the outward extension and inward retraction of the bolt.

7 is a hub or roll-back which is suitably mounted in the casing and operable, preferably, by means of a thumb-piecel 8.

9 is a shoulder carried by the hub 7, which is adapted to throw the bolt out or in. Normally when the bolt 1 is drawn the shoulder 9 of the hub 7 rests against the stop 10, carried by the side plate 1 of the casing. When the bolt is shot into the position'shown in Fig. 3, the shoulder strikes against a stop carried by the side platel 1, which corresponds in position to the stop 11, carried by the back side plate 2. In either position of the rollback the bolt is prevented from accidental longitudinal movement by reason of the coperation of those portions adjacent the shoulder 9. 12 is another stop carried by the back plate 2, which corresponds in position to the stop 10 for the purpose hereinafter mentioned. 13 is apivoted tumbler pressed by the spring 111 into the position shown in Fig. 1, whereit rests against the stop 6. This tumbler coperating with the beveled portion of the shoulder 9 of the roll-back tends to hold the roll-back in either the position shown in Fig. 1 or that shown in Fig. 3. The tumbler does not of itself, however, prevent the bolt from being shot, but affords a yielding resistance .to the rotation of the hub 7 and thumb-piece 8, since it requires some considerable force to rotate the hub 7 and lift the tumbler 13 through the medium of the shoulder 9.

15 is a second bolt similar in function to bolt 4, but operable from the other side of the lock by means of the hub or roll-back 16 and thumb-piece 17. The hub 16 has a projection or shoulder 18 for operating the bolt 15 and for holding it in either its outward or inward position. This projection or shoulder is prevented from turning beyond its proper distance by the stops 11 and 12, carried by the plate 2.

19 is a second tumbler operated by a spring and similar to tumbler 13, which is pressed downward by the spring 14. This tumbler 19 in a similar manner cooperates with the projection 18 of the roll-back 16 to hold it IOO definitely either in its inward or outward position. y

From the foregoing it will be seen that the bolts 4 and 15 are independent of one another and either one or the other, or both, may be operated, as desired, only one being accessible, however, from either side. rIhe door carrying this lock may therefore be opened or locked by simply turning one or the other of the thumb-pieces to suit the convenience of the person who happens to be on one side or the other of the door. It is often desirable, however, to lock the door so that it cannot be opened except by a pass-key. For this I have provided a simple key-operated mechanism which may be controlled by a master-key either to loch one or the other of the bolts in their extended position. It will also be seen that in a similar manner the bolts may be both locked when retracted.

21 is a bolt which may be termed a deadbolt for preventing the operation of either of the locking-bolts 4 or 15. A This dead-bolt is guided by the post 22 and between the lugs 23 and 24, all carried by the plate 2. rIhe tumbler 25 (or series of tumblers) coperates with a dead-bolt 21 to hold it either in the position shown in full lines in Fig. 1 or in the position shown in dotted lines, Fig. 1, and in full lines, Fig. 3. 'Ihese tumblers are operable by a pass-key or masterkey in the usual manner, so that the deadbolt 21 can be moved longitudinally. When the parts are in position, as shown in Fig. 1 in full lines, the tumblers 13 and 19 are free to be raised by the rotation of the rollbacks 7 and 16, respectively, for the operation of the bolts 4 and 15. WhenI the deadbolt 21 is in the position shown dotted, Fig. 1, and full lines, Fig. 3, the lug or projection 26 stands immediately above the shoulders 27 and 28 of the tumblers 13 and 19, and thus prevents their operation, and consequently the operation of the bolts 4 and 15. The dead-bolt operatesin the same manner if one ofthe bolts 4 or 15 is extended, so that its retraction is prevented. It will thus be. obvious that the locking-bolts may be blocked by use of a pass-key when desired to prevent the opening of the door or to prevent its being locked.

That I claim is- 1. In a lock mechanism, the combination of a pair of independent bolts and a pair of corresponding independent hubs with projections for operating said bolts, stops for said hubs and independent spring-pressed tumblers cooperating with said hubs for holding them in position against said stops and preventing ghe accidental longitudinal movement of said o ts.

2. In a lock mechanism, the combination of a pair of independent bolts and a pair of corresponding independent hubs with projections Jfor operating said bolts, stopsfor said hubs and independent tumblers coperating with said hubs for holding them in position andv preventing the accidental longitudinal movement of said bolts and controllablemeans for blocking the movement of either of said tumblers.

y 3. In alock mechanism, the combination of a pair of independent bolts and a pair of corresponding independent hubs with projections for operating said bolts, stops for said hubs and independent spring-pressed tumblers cooperating with said hubs for holding them in position and preventing' the accidental longitudinal movement of said bolts, and key-operable means for preventing the operation of said bolts.

4. In a lock mechanism, the combination of a pair of independent locking-bolts, independent means for operating said bolts from either side and a single key-operable means for preventing the retraction of either of said bolts.

5. In alock mechanism, the combination of a pair of independent locking-bolts, independent means for operating said bolts from either side and key-operable means for preventing the operation of either of said bolts in either direction.

6. In alock mechanism, the combination of a pair of independent locking-bolts, a thumbpiece with connections for each locking-bolt and key-operable means cooperating therewith for preventing the retraction of either of saidA bolts.

7 In a lock mechanism, the combination of a pair of locking-bolts, a pair of hubs with thumb-pieces for operating said bolts, tumblers coperating with said hubs and a deadbolt for blocking said tumblers to prevent the retraction or extension of either of said locking-bolts.

Signed at New Britain, Connecticut, this 15th day of October, 1904.

HAS'. J. CALEY.

Witnesses:

' M. S. WIARD,

C. E. RUSSELL.

IOC

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